MRF24J40MA 데이터 시트보기 (PDF) - Microchip Technology

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MRF24J40MA

2.4 GHz IEEE Std. 802.15.4™ RF Transceiver Module

Microchip Technology 

MRF24J40MA

1.0 DEVICE OVERVIEW

The MRF24J40MA is a 2.4 GHz IEEE Std. 802.15.4™

compliant, surface mount module with integrated

crystal, internal voltage regulator, matching circuitry

and PCB antenna. The MRF24J40MA module oper-

ates in the non-licensed 2.4 GHz frequency band and

is FCC, IC and ETSI compliant. The integrated module

design frees the integrator from extensive RF and

antenna design, and regulatory compliance testing,

allowing quicker time to market.

The MRF24J40MA module is compatible with

Microchip’s ZigBee®, MiWi™ and MiWi P2P software

stacks. Each software stack is available as a free

download, including source code, from the Microchip

web site http://www.microchip.com/wireless.

The MRF24J40MA module has received regulatory

approvals for modular devices in the United States

(FCC), Canada (IC) and Europe (ETSI). Modular

approval removes the need for expensive RF and

antenna design and allows the end user to place the

MRF24J40MA module inside a finished product and

not require regulatory testing for an intentional radiator

(RF transmitter). See Section 3.0 “Regulatory

Approval” for specific requirements to be followed by

the integrator.

1.1 Interface Description

Figure 1-1 shows a simplified block diagram of the

MRF24J40MA module. The module is based on the

Microchip Technology MRF24J40 IEEE 802.15.4™

2.4 GHz RF Transceiver chip. The module interfaces

to many popular Microchip PIC® microcontrollers via

a 4-wire serial SPI interface, interrupt, wake, Reset,

power and ground as shown in Figure 1-2. Table 1-1

provides the pin descriptions.

Data communications with the MRF24J40MA module

are documented in the “MRF24J40 IEEE 802.15.4™

2.4 GHz RF Transceiver Data Sheet” (DS39776). Refer

to the MRF24J40 data sheet for specific serial interface

protocol and register definitions.

FIGURE 1-1:

MRF24J40MA BLOCK DIAGRAM

PCB

Antenna

MRF24J40MA IEEE Std. 802.15.4™ Module

MRF24J40

Matching

Circuitry

Physical

MAC

Interface

Power

Management

SPI

Digital

I/O

Power

20 MHz

Crystal

© 2008 Microchip Technology Inc.

Advance Information

DS70329A-page 5

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